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5-4
Troubleshooting
Diagnosing with the LEDs
Troubleshooting
Diagnosing with the LEDs
Table 5-1 shows LED patterns on the switch and the switch modules that
indicate problem conditions.
1. Check in the table for the LED pattern you see on your switch.
2. Refer to the corresponding diagnostic tip on the next few pages.
Table 5-1. LED Error Indicators
LED Pattern Indicating Problems
Diag
Tips
Power Fault
Module (Mdl)
Status**
RPS
Status
EPS
Status
Test
Fan
Status
Port LED
(in Link view mode)
off with
power cord
plugged in
*** ***
➊
on prolonged on * * prolonged
on
**
➋
on blink orange
†
* * blink
orange
†
**
➌
on blink orange
†
* * off blink
orange
†
*
➍
on blink orange
†
see tip 5 * blink
orange
†
* blink orange
†
➎
on off * * off * off with cable
connected
➏
on off * * off * on, but the port is
not
communicating
➐
on blink orange
†
* blink
orange
†
*** *
➑
on blink orange
†
* * blink
orange
†
** *
➒
on blink orange
†
F
blink orange
†
B
blink orange
†
* blink
orange
†
**
➓
* This LED is not important for the diagnosis.
†
The blinking behavior is an on/off cycle once every 1.6 seconds, approximately.
** The Module Status LED is located on the module in the rear of the switch. (This is not applicable to the 10/100 3500PoE
and non-PoE switches.)
F - Front
B - Back